Hi,
How can I import two modules contain the same definitions for some func and
variables?
for example
import std.c.windows.windows;
import win;

If the function names are the same, you just have to explicitly specify which
one you are referring to:
int variable=win.foo();
int another_variable=std.c.windows.windows.foo();
Note:
If you find that typing std.c.windows.windows every time is annoying, you can
alias it like this: alias std.c.windows.windows winfunc;
then use winfunc.foo(); // refers to std.c.windows.windows.foo();
Hope it helps :) .